Patent US4047599A successfully refreshed from Google Patents.
US4047599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically powered vehicle and feed cart
Assignee: Individual
•
Filing: 1976-05-11
•
Granted: 1977-09-13
•
Expires: 1996-05-11
Abstract
Abstract A vehicle and, in particular, a feed cart as used in a barn to feed the livestock, which vehicle or feed cart is distinctively provided with an electric motor, an electric plug in cord supplying electric power to the motor from an electric outlet of the barn, a reel for the cord, and a reel drive assembly rotatively biasing the reel toward winding of the cord thereon to thus maintain the cord taut and to prevent entanglement and soiling of the cord, independently of displacement of the latter. The reel drive assembly includes a lever, with a friction drive wheel and an idler pulley rotatively mounted on the lever, and a spring biasing the lever, whereby the cord in operative engagement with the idler pulley, upon reaching a predetermined tension, causes pivoting of the lever and disengagement of the friction drive wheel from the reel and when the tautness of the cord is released, the spring acts on the lever to drivingly engage the friction drive wheel with the reel to windingly bias the cord to restore tautness thereof.
Inventors
- 👤 Victor Rousseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:58
CPC Classifications
H; H02; H02G; H02G11/00; H02G11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
227 words
An electrically powered vehicle comprising a chassis, an electric motor secured to the chassis, an electric plug-in cord, a reel having the electric plug-in cord operatively connected thereto and wound thereon, an electrical connection electrically joining the reel to the motor, a swivelling pulley carried by the chassis, operatively engaged by the cord, and laterally guiding the latter relative to the chassis, and a reel drive assembly rotatively biasing said reel toward operative winding of the cord thereon, said reel drive assembly including a lever pivoted to the chassis about an axis parallel to the rotation axis of the reel for movement toward and away from said reel, a friction drive wheel rotatably mounted on said lever for rotation about an axis parallel to the rotation axis of the reel, said lever being spring biased to bring said friction drive wheel in driving engagement with the periphery of said reel to rotate the latter in winding direction with respect to the electric cord, and said friction drive wheel displaceable with the support away from said driving engagement with the reel, and an idler pulley rotatively carried by said lever and operatively engaged and biased by the electric cord toward displacement of the lever away from said reel and of the rotary friction wheel away from driving engagement with the reel under predetermined tension in the electric cord.
Claim 2
Dependent Claim
227 words
An electrically powered vehicle comprising a chassis, an electric motor secured to the chassis, an electric plug-in cord, a reel having the electric plug-in cord operatively connected thereto and wound thereon, an electrical connection electrically joining the reel to the motor, a swivelling pulley carried by the chassis, operatively engaged by the cord, and laterally guiding the latter relative to the chassis, and a reel drive assembly rotatively biasing said reel toward operative winding of the cord thereon, said reel drive assembly including a lever pivoted to the chassis about an axis parallel to the rotation axis of the reel for movement toward and away from said reel, a friction drive wheel rotatably mounted on said lever for rotation about an axis parallel to the rotation axis of the reel, said lever being spring biased to bring said friction drive wheel in driving engagement with the periphery of said reel to rotate the latter in winding direction with respect to the electric cord, and said friction drive wheel displaceable with the support away from said driving engagement with the reel, and an idler pulley rotatively carried by said lever and operatively engaged and biased by the electric cord toward displacement of the lever away from said reel and of the rotary friction wheel away from driving engagement with the reel under predetermined tension in the electric cord.
Claim 3
Dependent Claim
75 words
An electrically powered vehicle as defined in claim 1, wherein the lever is pivoted at one end about said pivot axis thereof, said friction drive wheel is rotatably carried by the lever adjacent said one end thereof, said idlerpulley is rotatably carried by the other end of the lever, and a shock-absorbing spring is connected between the chassis and the lever, whereby to attenuate the transmission of shock by the electric cord to the reel.
Claim 4
Dependent Claim
69 words
An electrically powered vehicle as defined in claim 2, further including an arm pivoted to the lever, a tension adjustment idler rotatively carried by said arm, a belt drivingly engaged around the tension adjustment idler pulley and the friction drive pulley, and a belt tension spring connected between the lever and the arm and operatively biasing the latter and the belt tensioning idler pulley toward tensioning of the belt.
Claim 5
Dependent Claim
26 words
An electrically powered vehicle as defined in claim 3, wherein both the lever and the arm are adjustably pivoted to the chassis and the lever respectively.
Claim 6
Dependent Claim
57 words
An electrically powered vehicle as defined in claim 4, wherein said chassis has an end face and a side face defining a mutual corner, and said swivelling pulley is pivoted at said corner and outwardly projects from both said end face and said side face, thereby allowing free 270° swivelling externally of said end and side faces.
Claim 7
Dependent Claim
72 words
An electrically powered vehicle as defined in claim 5, wherein said reel includes a cylindrical hub of insulation material and a pair of slip rings tightly and separately fitted over the cylindrical hub, said cord includes a pair of electrical wires connected to the slip rings respectively and rotatable therewith, and said electrical connection includes a pair of brushes separately fixed to the chassis and in contact with the slip rings respectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |